{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC688N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC688N","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC688N","factsUrl":"https://icboms.com/api/mcp/products/SN74HC688N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series SN74HC688N 8-bit identity comparator, active-low output, through-hole 20-DIP (0.300\", 7.62mm), 2V~6V supply, -40°C~85°C.","salesMarkdown":"## 8-bit identity comparison in a through-hole DIP The Texas Instruments SN74HC688N is an 8-bit identity comparator from the 74HC family, comparing two 8-bit words and asserting an active-low output when they match. The 8 µA quiescent current keeps the static power draw negligible in always-on monitoring circuits. ## Parametric fit for timing and temperature For a 5 V system driving a 50 pF bus, the output settles within 36 ns, so the downstream latch must wait at least that long before reading the result.","metaTitle":"SN74HC688N Texas Instruments 74HC Identity Comparator, 8-bit","metaDescription":"Texas Instruments SN74HC688N 8-bit identity comparator, active-low output, 2V-6V supply, 36ns @6V, 50pF. Active production, RoHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Identity Comparator","Output":"Active Low","Series":"74HC","Package":"Tube","Mounting Type":"Through Hole","Number of Bits":"8","Package / Case":"20-DIP (0.300\\\", 7.62mm)","Output Function":"A=B","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-PDIP","Current - Quiescent (Iq)":"8 µA","Current - Output High, Low":"5.2mA, 5.2mA","Max Propagation Delay @ V, Max CL":"36ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.54","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.54000","currency":"USD"},{"qty":10,"price":"$1.37600","currency":"USD"},{"qty":25,"price":"$1.30600","currency":"USD"},{"qty":100,"price":"$1.07270","currency":"USD"},{"qty":250,"price":"$1.00276","currency":"USD"},{"qty":500,"price":"$0.88616","currency":"USD"},{"qty":1000,"price":"$0.69960","currency":"USD"},{"qty":2500,"price":"$0.66000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ea59f5e34489ca95d6d3873e2a75a97a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the SN74HC688N used for?","answer":"It is an 8-bit identity comparator: it compares two 8-bit words and pulls its output low when they match. Typical uses include address decoding in memory-mapped I/O systems, data-bus monitoring, and fault-detection circuits where a specific binary pattern triggers an alert."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC688N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC688N when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}